Stove.



I PATENTED JUNE 25, 1907.

L. MILLER.

STOVE.

APPLICATION rum) APB. 2.1906.

2 gums-42mm 1;

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PATENTED JUNE 25, 1907.

L. MILLER.

' STOVE. APPLICATION. FILED APR.2.1906.

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LEWIS MILLER, OF E'LWOOD, INDIANA.

STOVE.

Specification of Letters Patent.

Patented June 25,1907.

Application filed April 2,1906. Serial No. 309,536.

To (all when it may concern.-

Be it known that I, LEwIs MILLER, a citizen of the United States, residing at Elwood, in the county of Madison and State of Indiana, have invented certain new and useful Improvements in Stoves, of which the following is a specification. 4

My invention relates to heating stoves or furnaces and has for its object the provision of an improved device of this character having a large heating and radiating surface whereby the heat produced with a given amount of fuel will be increased.

Further objects and advantages of the invention will be set forth in the detailed description which now follows.

In the accompanying drawings: Figure 1 is a vertical sectional view of a stove constructed in accordance with the invention. Fig. 2 is a horizontal sectional view upon line 22 of Fig. 1. Fig. 3 is a horizontal-section upon line 33 of Fig. 1. Fig. 4 is a perspective view of an annular ring hereinafter described. Fig. 5 is a perspective view of a cap, hereinafter described. Fig. 6 is a vertical sectional view of a furnace embodying the principles of the invention. Fig. 7 is a partial horizontal section of said furnace on line 7-7 of Fig. 6. Fig. 8 is a perspective view of an annular ring hereinafter described, and Fig. 9 is a perspective view of a cap herein after described.

Like numerals designate corresponding parts in all of the figures of the drawings.

Referring to the drawings, the numeral 5 designates a stove comprising a base 6, mounted upon legs 7, an outwardly flaring iirepot 8, a grate 10 and the heat and air conducting members now described.

An opening 11 formed through the base 6 is encircled by an annular flange 12. Leading from this opening is a comparatively large air supply pipe, which extends from the base to the upper portion of the firepot where it flares outwardly as at 14 and its upper edge is grooved as at 15, for the reception of the lower end of the cylinder shell 16, the upper end of said shell encircling a flange 17 of an annular ring 18. The upper edge of the firepot 8 is grooved as at 19, for the reception of the lower end of an annular shell 20, the upper end of which is encircled by a flange 21 of ring 18. Openings 22 formed through the ring 18 are in communication with openings 23 formed through a cap 24, through short oval section of pipe 25. A top 26 incloses a space above the cap 24 and from this space leads a smoke flue 27.

An ash pit 28 is formed in the base 6 from which the ashes may be removed through the door 29. A door 30 formed through the shell provides means for supplying fuelto the flrepot. tending around the base of the firepot, forms a track for rollers 32, carried upon the under side of grate 10. Oscillatory motion may be imparted to this grate by inserting a tool or shaker through the opening in the recess 33 formed in the edge of the said grate.

The operation of this form of the device is as follows: The products of combustion and smoke, pass upwardly from the fire pot, through the comparatively narrow channel formed between the shells 16 and 20, passing through the sections of pipe and through. the smoke flue 27. This results in highly heating both of the shells 16 and 20, the shell 20 giving off heat directly in the room in which the stove is located. The cold air is drawn from the floor of "the room through the air supply pipe 13 and through shell 16 where it is heated by coming into contact with said shell. It then passes from said shell through openings 35 and between the short sections of pipe 25, into the room.

The furnace illustrated in Fig. 6 is constructed substantially upon the same principle and the same reference numerals have been applied to the parts of said furnace, which corresponds with like parts in the stove. A shell 36 completely envelops the top 26, shell 20 and firepot 8 illustrated in Fig. 6 and the smoke flue passes through the wall of said shell. A cold air supply pipe 37 conducts cold air to the interior of said shell, while hot air pipes 38 serve to conduct the heated air from the upper portion of said shell. A slot 39 formed through the walls of shell 36 permits. the insertion of a shaking tool when it is desired to oscillate the grate. A door 41 closes the end of the fuel spout (or chute) 42 projecting through an opening in the wall of the shell 36.

The operation of this furnace is substantially the same as that of the stove illustrated in Fig. 1, with the exception that instead of discharging the heated air from shell 16 into the atmosphere, said heated air is discharged through openings 35 into the interior of shell 36 whence it is conducted by the hot air pipes 38.

From the foregoing description it will be An annular horizontal flange 31 ex- ICO seen that simple and efficient means are herein provided for accom lishing the obj ects of the invention, but W 'le the elements shown and described are well adapted to serve the purposes for which they are intended, it is to be understood that the invention is not limited to the precise construction set forth, but includes Within its purview such changes as may be made within the scope of the appended claims.

Having described my invention What I claim is:

In a device of the character described, the combination With an inner shell communicating With an air supply pipe and forming an air chamber, and an outer shell forming a combustion chamber and surrounding said inner shell in spaced relation, of an annulus arranged between said shells in the upper portion thereof and formed with a series of openings communicating with the combustion chamber occurring between said shells, spaced vertical pipes leading severally from said openings and a cap plate formed with openings severally registering with said pipes and transversely occupying the entire space defined by said outer shell, said pipes having sealed connection with said annulus and said cap plate.

In testimony whereof I aflix my signature in presence of two Witnesses.

LEWIS MILLER.

Witnesses FRANK THOMAS, DOLLY HoUoK. 

